Javascript 倒数计时器应停止在 00:00

Question

我正在研究倒数计时器，我发现这段代码几乎是我所需要的，只是我不想在它到达 00:00 时重新启动计时器。我尝试进行更改但没有成功。

这是JsFiddle代码

<div id="countdown">1:00</div>

var seconds;
var temp;
var GivenTime=document.getElementById('countdown').innerHTML
console.log(GivenTime)

function countdown() {
time = document.getElementById('countdown').innerHTML;
timeArray = time.split(':')
seconds = timeToSeconds(timeArray);
if (seconds == '') {
temp = document.getElementById('countdown');
temp.innerHTML = GivenTime;
    time = document.getElementById('countdown').innerHTML;
timeArray = time.split(':')
seconds = timeToSeconds(timeArray);
}
seconds--;
    temp = document.getElementById('countdown');
temp.innerHTML= secondsToTime(seconds);
timeoutMyOswego = setTimeout(countdown, 1000);
    

}
function timeToSeconds(timeArray) {  
var minutes = (timeArray[0] * 1);
var seconds = (minutes * 60) + (timeArray[1] * 1);
return seconds;
}

function secondsToTime(secs) {
var hours = Math.floor(secs / (60 * 60));
hours = hours < 10 ? '0' + hours : hours;
var divisor_for_minutes = secs % (60 * 60);
var minutes = Math.floor(divisor_for_minutes / 60);
minutes = minutes < 10 ? '0' + minutes : minutes;
var divisor_for_seconds = divisor_for_minutes % 60;
var seconds = Math.ceil(divisor_for_seconds);
seconds = seconds < 10 ? '0' + seconds : seconds;
    
  
return  minutes + ':' + seconds;
//hours + ':' + 
    
}
countdown();

Answer 1

当倒计时到达 00:00

时，您可以简单地在倒计时中使用 clearTimeout 功能

您只需在倒计时中添加此 if 条件即可。

if (secondsToTime(seconds) == '00:00') {
   clearTimeout(timeoutMyOswego); //stop timer
}

工作演示：

var seconds;
var temp;
var GivenTime = document.getElementById('countdown').innerHTML

function countdown() {
  time = document.getElementById('countdown').innerHTML;
  timeArray = time.split(':')
  seconds = timeToSeconds(timeArray);
  if (seconds == '') {
    temp = document.getElementById('countdown');
    temp.innerHTML = GivenTime;
    time = document.getElementById('countdown').innerHTML;
    timeArray = time.split(':')
    seconds = timeToSeconds(timeArray);
  }
  seconds--;
  temp = document.getElementById('countdown');
  temp.innerHTML = secondsToTime(seconds);
  var timeoutMyOswego = setTimeout(countdown, 1000);
  if (secondsToTime(seconds) == '00:00') {
    clearTimeout(timeoutMyOswego); //stop timer
    console.log('Time"s UP')
  }
}

function timeToSeconds(timeArray) {
  var minutes = (timeArray[0] * 1);
  var seconds = (minutes * 60) + (timeArray[1] * 1);
  return seconds;
}

function secondsToTime(secs) {
  var hours = Math.floor(secs / (60 * 60));
  hours = hours < 10 ? '0' + hours : hours;
  var divisor_for_minutes = secs % (60 * 60);
  var minutes = Math.floor(divisor_for_minutes / 60);
  minutes = minutes < 10 ? '0' + minutes : minutes;
  var divisor_for_seconds = divisor_for_minutes % 60;
  var seconds = Math.ceil(divisor_for_seconds);
  seconds = seconds < 10 ? '0' + seconds : seconds;

  return minutes + ':' + seconds;
  //hours + ':' + 

}
countdown();

<div id="countdown">00:10</div>

Answer 2

您可以尝试更换负责重启计时器的代码。

但只这样做会导致计时器变为负值。

所以按照的建议，您需要添加停止计时器的代码。

var seconds, temp;
var GivenTime = document.getElementById('countdown').innerHTML;

function countdown() {
  time = document.getElementById('countdown').innerHTML;
  timeArray = time.split(':')
  seconds = timeToSeconds(timeArray);
  console.log(seconds);
  
  // Do something when the timer is out
  if (seconds === 0) {
    clearTimeout(timeoutMyOswego);
    return;
  }
  
  seconds--;
  temp = document.getElementById('countdown');
  temp.innerHTML = secondsToTime(seconds);
  timeoutMyOswego = setTimeout(countdown, 1000);
};
countdown();

function timeToSeconds(timeArray) {
  var minutes = (timeArray[0] * 1);
  var seconds = (minutes * 60) + (timeArray[1] * 1);
  return seconds;
}

function secondsToTime(secs) {
  var hours = Math.floor(secs / (60 * 60));
  hours = hours < 10 ? '0' + hours : hours;
  var divisor_for_minutes = secs % (60 * 60);
  var minutes = Math.floor(divisor_for_minutes / 60);
  minutes = minutes < 10 ? '0' + minutes : minutes;
  var divisor_for_seconds = divisor_for_minutes % 60;
  var seconds = Math.ceil(divisor_for_seconds);
  seconds = seconds < 10 ? '0' + seconds : seconds;

  return minutes + ':' + seconds;
}

<div id="countdown">00:05</div>

Javascript 倒数计时器应停止在 00:00

Javascript countdown timer should stop at 00:00

javascript

jquery

timer

countdown

countdowntimer